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30 FPS is the default setting in Captivate unless you have told it otherwise. If you want to double-check, click Edit > Preferences > Project > Publish Settings.
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I've also noticed this. My mp4s are getting exporting 15fps, even with the preferences set to 30fps.
I also get this frame rate for an mp4 video.
For web delivery of video, 15 fps is sort of the prescribed frame rate. It looks like Adobe hard-coded 15 fps for the generation of an mp4.
that's really sad, 15 fps is by no means a standard for today's devices. PErhaps on tiny Sony-Ericson cell phones from 5-6 years ago when displaying 3gp file video at 176x144 or thereabouts, but in the age of iPads and 2000 pixels tablets with dual or quadcore and APU support, really, there's no justification for 15 fps. Besides, through Youtube, Vimeo and the likes, you can get it down at 30 fps easily.
Any chance this might be fixed by now?
Sad to say, this business of a fixed frame rate is still a problem: I'm using Captivate 5.5, and whenever I generate an mp4 output, I still get that blasted 15 fps (regardless of my settings). I agree that there is "no justification for 15 fps," considering today's technology. And aesthetically, it looks awkward with the motion being too truncated for my taste. It also makes it hard to work with "true video," which is typically at 30 fps (29.97, to be exact). As a workaround, I've had to use Camtasia for the screen events that I sometimes include in our corporate video presentations: I can at least generate an mp4 clip of a screen event at 30 fps, which I can then import into my NLE's timeline. Hopefully, in next release, Adobe will have this problem resolved.
Yeah, you'd think when they start producing converters for HTML5 output, it would go up to 30 fps, but that converter is not quite there yet either to begin with IMHO.
And I wonder why it was labeled as 'for web delivery' in the first place. MP4 does not necessarily imply web. I can see using the same MP4 at tradeshows on bigscreen locally. And 15 fps really looks bad in that case. I can also see playing such video locally on an iPad during a sales preso, or in an elevator pitch. Can't use the Flash alternative in case of iOS, it's gotta be MP4 until they make HTML5 a viable alternative.